U.S. patent application number 15/014956 was filed with the patent office on 2016-09-08 for organic light-emitting diode module equipped with vertical electric connection structure.
The applicant listed for this patent is WiseChip Semiconductor Inc.. Invention is credited to Shih-Hung CHANG, Chien-Hsun CHEN, Chia-Chi HUANG, Chien-Le LI, I-Hsuan LIN, Po-Hsin LIN, Shang-Chih LIN, Sheng-Hsu SHIH, Yung-Cheng TSAI.
Application Number | 20160260793 15/014956 |
Document ID | / |
Family ID | 56850991 |
Filed Date | 2016-09-08 |
United States Patent
Application |
20160260793 |
Kind Code |
A1 |
LIN; Po-Hsin ; et
al. |
September 8, 2016 |
ORGANIC LIGHT-EMITTING DIODE MODULE EQUIPPED WITH VERTICAL ELECTRIC
CONNECTION STRUCTURE
Abstract
An OLED module equipped with vertical electric connection
structure includes a substrate, a plurality of OLED clusters, an
anode wire structure and a cathode wire structure. The substrate is
extended toward a first direction. The OLED clusters are located on
the substrate in the first direction. The anode wire structure
includes a bottom layer wire set, an insulation layer, a middle
wire layer set and a top layer wire set. The bottom layer wire set
is located on the substrate. The insulation layer is located on the
bottom layer wire set. The top layer wire set is located on the
insulation layer. The cathode wire structure is located on the
substrate and extended axially thereof The middle layer wire set
runs through the insulation layer and forms vertical connection
between the bottom layer wire set and the top layer wire set.
Inventors: |
LIN; Po-Hsin; (Miaoli
County, TW) ; CHANG; Shih-Hung; (Miaoli County,
TW) ; LIN; Shang-Chih; (Miaoli County, TW) ;
HUANG; Chia-Chi; (Miaoli County, TW) ; LIN;
I-Hsuan; (Miaoli County, TW) ; SHIH; Sheng-Hsu;
(Miaoli County, TW) ; CHEN; Chien-Hsun; (Miaoli
County, TW) ; TSAI; Yung-Cheng; (Miaoli County,
TW) ; LI; Chien-Le; (Miaoli County, TW) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
WiseChip Semiconductor Inc. |
Miaoli County |
|
TW |
|
|
Family ID: |
56850991 |
Appl. No.: |
15/014956 |
Filed: |
February 3, 2016 |
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
H01L 27/3276 20130101;
H01L 27/3297 20130101; H01L 27/3202 20130101; H01L 27/3204
20130101 |
International
Class: |
H01L 27/32 20060101
H01L027/32 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 5, 2015 |
TW |
104106978 |
Claims
1. An organic light-emitting diode module equipped with vertical
electric connection structure, comprising: a substrate which is
extended toward a first direction and includes a first side and a
second side separated in the first direction; a plurality of
organic light-emitting diode (OLED) clusters located on the
substrate in the first direction that include a first OLED and a
second OLED opposing each other, and a third OLED and a fourth OLED
that are located between the first OLED and the second OLED; an
anode wire structure including: a bottom layer wire set which is
located on the substrate and includes a first bottom layer wire
extended toward the first side, a second bottom layer wire, a third
bottom layer wire, a fourth bottom layer wire and a bottom layer
external connection wire extended in the first direction, the first
bottom layer wire, the second bottom layer wire, the third bottom
layer wire and the fourth bottom layer wire including respectively
one end formed electric connection with the first OLED, the second
OLED, the third OLED and the fourth OLED, the bottom layer external
connection wire forming electric connection between another end of
the third bottom layer wire and the fourth bottom layer wire,
wherein the third bottom layer wire and the fourth bottom layer
wire include respectively an extended length smaller than or equal
to the first bottom layer wire and the second bottom layer wire; an
insulation layer which is located on the bottom layer wire set and
includes a first through hole and a second through hole that
correspond to another end of the first bottom layer wire and
another end of the second bottom layer wire; a middle layer wire
set including a first middle layer wire located in the first
through hole to form electric connection with the another end of
the first bottom layer wire and a second middle layer wire located
in the second through hole to form electric connection with the
another end of the second bottom layer wire; and a top layer wire
set which is located on the insulation layer and includes a top
layer internal connection wire to connect between the first middle
layer wire and the second middle layer wire; and a cathode wire
structure which is located on the substrate and extended in the
first direction to form electric connection with the first OLED,
the second OLED, the third OLED and the fourth OLED.
2. The organic light-emitting diode module equipped with vertical
electric connection structure of claim 1, wherein the OLED clusters
further include a fifth OLED and a sixth OLED that are located
between the third OLED and the fourth OLED, and the bottom layer
wire set further includes a fifth bottom layer wire, a sixth bottom
layer wire and a bottom layer internal connection wire, the fifth
bottom layer wire and the sixth bottom layer wire including
respectively one end to form electric connection with the fifth
OLED and the sixth OLED, the bottom layer internal connection wire
forming electric connection with another ends of the fifth bottom
layer wire and the sixth bottom layer wire.
3. The organic light-emitting diode module equipped with vertical
electric connection structure of claim 2, wherein the fifth bottom
layer wire and the sixth bottom layer wire include respectively an
extended length opposing the first direction and smaller than the
third bottom layer wire and the fourth bottom layer wire.
4. The organic light-emitting diode module equipped with vertical
electric connection structure of claim 2, wherein the OLED clusters
further include a seventh OLED at one side of the first OLED remote
from the third OLED and an eighth OLED at one side of the second
OLED remote from the fourth OLED, and the bottom layer wire set
further includes a seventh bottom layer wire and an eighth bottom
layer wire that include respectively one end to form electric
connection with the seventh OLED and the eighth OLED, the
insulation layer further including a third through hole and a
fourth trough hole that correspond respectively to another ends of
the seventh bottom layer wire and the eighth bottom layer wire, the
middle layer wire set further including a third middle layer wire
located in the third through hole to form electric connection with
the another end of the seventh bottom layer wire and a fourth
middle layer wire located in the fourth through hole to form
electric connection with the another end of the eighth bottom layer
wire, the top layer wire set further including a top layer external
connection wire to connect between the third middle layer wire and
the fourth middle layer wire.
5. The organic light-emitting diode module equipped with vertical
electric connection structure of claim 4, wherein the seventh
bottom layer wire and the eighth bottom layer wire include
respectively an extended length opposing the first direction and
greater than the first bottom layer wire and the second bottom
layer wire.
6. The organic light-emitting diode module equipped with vertical
electric connection structure of claim 4 further including a
barrier layer located on the insulation layer, the barrier layer
including a first barrier portion located between the top layer
internal connection wire and the top layer external connection
wire.
7. The organic light-emitting diode module equipped with vertical
electric connection structure of claim 6, wherein the barrier layer
further includes a second barrier portion located between the
bottom layer internal connection wire and the bottom layer external
connection wire.
8. The organic light-emitting diode module equipped with vertical
electric connection structure of claim 1, wherein the first bottom
layer wire, the second bottom layer wire, the third bottom layer
wire and the fourth bottom layer wire are extended in parallel with
a second direction perpendicular to the first direction.
9. The organic light-emitting diode module equipped with vertical
electric connection structure of claim 1, wherein the first middle
layer wire is vertically and axially extended from another end of
the first bottom layer wire to one end of the top layer external
connection wire, and the second middle layer wire is vertically and
axially extended from another end of the second bottom layer wire
to another end of the top layer external connection wire, the
vertical and axial direction being perpendicular to the substrate.
Description
FIELD OF THE INVENTION
[0001] The present invention relates to an organic light-emitting
diode (OLED in short hereinafter) module and particularly to an
OLED module equipped with vertical electric connection
structure.
BACKGROUND OF THE INVENTION
[0002] OLED is a light emitting element which basically includes an
anode, a cathode, an Electron Hole (hole in short hereinafter)
transmission layer located between the anode and the cathode, an
electron transmission layer, and an organic light-emitting layer
located between the hole transmission layer and the electron
transmission layer. When a voltage is applied to the anode and the
cathode, the hole and the electron are injected respectively from
the anode and the cathode to the hole transmission layer and the
electron transmission layer to join in the organic light-emitting
layer and release an energy in a light form.
[0003] Compared with the conventional light-emitting elements the
OLED has many advantages, such as lower electric consumption,
flexible, faster reaction speed and the like, hence it is widely
used in lighting fixtures, electronic indication lights and display
backlight source and the like, and has gradually replaced
traditional light-emitting elements such as LED, cold cathode tube
or tungsten light bulb.
[0004] Conventional OLED structure, such as Taiwan Patent NO.
1441554 entitled "OLED device with high color rendering" includes a
substrate, a first conductive layer, a plurality of white light
light-emitting layers and a second conductive layer. The first
conductive layer is located on the substrate. The white light
light-emitting layers are located on the first conductive layer,
and the second conductive layer is located on the white light
light-emitting layers. The white light light-emitting layers are
complementary in spectrum, and at least one carrier regulation
layer can be selectively placed between the white light
light-emitting layers to further improve light-emitting efficiency
and color rendering.
[0005] U.S. patent publication No. 2008/0165243 also discloses an
OLED which includes a substrate, a plurality of OLED sets located
on the substrate, a plurality of first wires located on the
substrate, a plurality of spacers to separate the OLED sets, a
plurality of first conductive blocks located on the substrate and a
plurality of second conductive blocks located on the substrate. The
OLED includes a first electrode, an organic light-emitting layer
and a second electrode. The first wires are connected to the first
electrodes of abutting OLED sets, the first conductive blocks are
connected respectively to the first electrode of a first cluster,
and the second conductive blocks are connected respectively to the
second electrode of various clusters. The OLED module formed via
the aforesaid technique requires a great deal of area for electrode
wiring that results in too large size of elements.
SUMMARY OF THE INVENTION
[0006] The primary object of the present invention is to solve the
problem of the conventional OLED of taking too large area on
electrode wiring that makes reducing element size impossible.
[0007] To achieve the foregoing object the present invention
provides an OLED module equipped with vertical electric connection
structure that includes a substrate, a plurality of OLED clusters,
an anode wire structure and a cathode wire structure. The substrate
is extended toward a first direction and has a first side and a
second side separated in the first direction. The OLED clusters are
located on the substrate in the first direction and include
respectively a first OLED and a second OLED that oppose each other,
and a third OLED and a fourth OLED that are located between the
first OLED and the second OLED.
[0008] The anode wire structure includes a bottom layer wire set,
an insulation layer, a middle layer wire set and a top layer wire
set. The bottom layer wire set is located on the substrate and
includes a first bottom layer wire extended toward the first side,
a second bottom layer wire, a third bottom layer wire, a fourth
bottom layer wire and a bottom layer external connection wire
extended in the first direction. The first bottom layer wire, the
second bottom layer wire, the third bottom layer wire and the
fourth bottom layer wire include respectively one end formed
electric connection with the first OLED, the second OLED, the third
OLED and the fourth OLED. The bottom layer external connection wire
is electrically connected between another ends of the third bottom
layer wire and the four bottom layer wire. The third bottom layer
wire and the fourth bottom layer wire have an extended length
smaller than or equal to the first bottom layer wire and the second
bottom layer wire. The insulation layer is located on the bottom
layer wire set and has a first through hole and a second through
hole corresponding respectively to another ends of the first bottom
layer wire and the second bottom layer wire. The middle layer wire
set includes a first middle layer wire located in the first through
hole to form electric connection with another end of the first
bottom layer wire and a second middle layer wire located in the
second through hole to form electric connection with another end of
the second bottom layer wire. The top layer wire set is located on
the insulation layer and includes a top layer internal connection
wire which is connected between the first middle layer wire and the
second middle layer wire. The cathode wire structure is located on
the substrate and extended toward the first direction to form
electric connection with the first OLED, the second OLED, the third
OLED and the fourth OLED.
[0009] Thus, with the bottom layer wire set passing through the
insulation layer via the middle layer wire set to form vertical
connection with the top layer wire set part of wire area parallel
with the substrate is replaced by a vertical connection structure,
therefore can shrink the area of the OLED module.
[0010] The foregoing, as well as additional objects, features and
advantages of the invention will be more readily apparent from the
following detailed description, which proceeds with reference to
the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0011] FIG. 1A is a top view of an embodiment of the invention.
[0012] FIG. 1B is a sectional view taken on line A-A' in FIG.
1A.
[0013] FIG. 1C is a sectional view taken on line B-B' in FIG.
1A.
[0014] FIG. 1D is a sectional view taken on line C-C' in FIG.
1A.
[0015] FIG. 1E is a sectional view taken on line D-D' in FIG.
1A.
[0016] FIG. 2 is a top view of another embodiment of the
invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
[0017] Please refer to FIGS. 1A through 1E for a top view and
various sectional views of an embodiment of the OLED module
equipped with vertical electric connection structure of the
invention. The OLED module includes a substrate 10, a plurality of
OLED clusters 30, an anode wire structure 40, a cathode wire
structure 50 and barrier layer 60. The substrate 10 is extended
toward a first direction X and has a first side and a second side
separated in the first direction. In this embodiment the first side
means an upper edge of the substrate 10 in FIG. 1A, and the second
side means a lower edge of the substrate 10 in FIG. 1A. The OLED
clusters 30 are located on the substrate 10 in the first direction
X and include respectively a first OLED 31 and a second OLED 32
that oppose each other, and a third OLED 33 and a fourth OLED 34
that are located between the first OLED 31 and the second OLED
32.
[0018] Please referring to FIG. 1B, the anode wire structure 40
includes a bottom layer wire set 41, an insulation layer 42, a
middle layer wire set 43 and a top layer internal connection wire
441. The bottom layer wire set 41 includes a first bottom layer
wire 410 extended toward the first side, a second bottom layer wire
411, a third bottom layer wire 412, a fourth bottom layer wire 413
and a bottom layer external connection wire 414 extended in the
first direction X. The first bottom layer wire 410, the second
bottom layer wire 411, the third bottom layer wire 412 and the
fourth bottom layer wire 413 are extended parallel with a second
direction Y perpendicular to the first direction X, and also
include respectively one end formed electric connection with the
first OLED 31, the second OLED 32, the third OLED 33 and the fourth
OLED 34.
[0019] In this invention the third bottom layer wire 412 and the
fourth bottom layer wire 413 are spaced from the first side at an
extended length smaller than or equal to the first bottom layer
wire 410 and the second bottom layer wire 411. Here, the first
direction X means a horizontal axial direction in the middle of the
substrate 10. In this embodiment the third bottom layer wire 412
and the fourth bottom layer wire 413 are spaced from the first side
at an extended length equal to the first bottom layer wire 410 and
the second bottom layer wire 411. The insulation layer 42 is
located on the bottom layer wire set 41. Furthermore, referring to
FIG. 1B, the insulation layer 42 is located on the first bottom
layer wire 410 of the bottom layer wire set 41. Also referring to
FIG. 1C, the insulation layer 42 is located on the third bottom
layer wire 412, and referring to FIG. 1D, the insulation layer 42
is located on the bottom layer external connection wire 414. The
insulation layer 42 has a first through hole 421 and a second
through hole 422 that correspond respectively to another end of the
first bottom layer wire 410 and another end of the second bottom
layer wire 411. Also referring to FIGS. 1B through 1D, the barrier
layer 60 is located on the insulation layer 42.
[0020] Please referring to FIG. 1C, the third OLED 33 is connected
to the third bottom layer wire 412 which is separated from the top
layer internal connection wire 441 through the insulation layer 42
at different planes. Also referring to FIG. 1D, the bottom layer
external connection wire 414 is separated from the top layer
internal connection wire 441 through the insulation layer 42 at
different planes. The bottom layer external connection wire 414
forms electrical connection with another ends of the third bottom
layer wire 412 and the fourth bottom layer wire 413. Please further
referring to FIG. 1E, the bottom layer external connection wire 414
has two ends formed electric connection with another ends of the
third bottom layer wire 412 and the fourth bottom layer wire 413 as
shown in FIG. 1C.
[0021] Please referring to FIG. 1E, the middle layer wire set 43
includes a first middle layer wire 431 and a second middle layer
wire 432 that are located respectively in the first through hole
421 and the second through hole 422, and form electrical connection
with another ends of the first bottom layer wire 410 and the second
bottom layer wire 411. Thus, the first bottom layer wire 410 and
the second bottom layer wire 411 are perpendicular respectively to
the first middle layer wire 431 and the second middle layer wire
432 for connection therewith, and extended in a vertical axial
direction. The top layer internal connection wire 441 is connected
between the first middle layer wire 431 and the second middle layer
wire 432. More specifically, the first middle layer wire 431 is
extended in the vertical axial direction from another end of the
first bottom layer wire 410 to one end of the top layer internal
connection wire 441, and the second middle layer wire 432 is
extended in the vertical axial direction from another end of the
second bottom layer wire 411 to another end of the top layer
internal connection wire 441, the vertical axial direction is
perpendicular to the substrate 10.
[0022] By means of the structure set forth above, with the first
bottom layer wire 410 and the second bottom layer wire 411
vertically connected respectively to two ends of the top layer
internal connection wire 441 via the first middle layer wire 431
and the first through hole 421, and the second middle layer wire
431 and the second through hole 422, the bottom layer wire set 41,
the middle layer wire set 43 and the top layer internal connection
wire 441 can be located at different planes to replace part of wire
area parallel with the substrate 10 by a vertical connection
structure, therefore can shrink the area of the anode wire
structure 40 parallel with the substrate 10.
[0023] The cathode wire structure 50 is located on the substrate 10
and extended in the first direction X to form electric connection
with the first OLED 31, the second OLED 32, the third OLED 33 and
the fourth OLED 34. In this embodiment the cathode wire structure
50 is located on the first OLED 31, the second OLED 32, the third
OLED 33 and the fourth OLED 34, and the barrier layer 60 includes a
first barrier portion 61 located between the top layer internal
connection wire 441 and the cathode wire structure 50.
[0024] Please refer to FIG. 2 for another embodiment of the
invention. Please be noted that the elements at the lower layer are
marked by solid lines rather than the dashed lines shown in FIG.
1A. In this embodiment the OLED module is designed as a line light
source, preferably a light source used on a laser printer. The OLED
clusters 30 further can include a fifth OLED 35, a sixth OLED 36, a
seventh OLED 37 and an eighth OLED 38. The fifth OLED 35 and the
sixth OLED 36 are located between the third OLED 33 and the fourth
OLED 34, and the bottom layer wire set 41 further includes a fifth
bottom layer wire 415, a sixth bottom layer wire 416 and a bottom
layer internal connection wire 417. The fifth bottom layer wire 415
and the sixth bottom layer wire 416 form electric connection
respectively with one end of the fifth OLED 35 and the sixth OLED
36, and the bottom layer internal connection wire 417 forms
electric connection with another ends of the fifth bottom layer
wire 415 and the sixth bottom layer wire 416, and the fifth bottom
layer wire 415 and the sixth bottom layer wire 416 include
respectively an extended length opposing the first direction X
smaller than the third bottom layer wire 412 and the fourth bottom
layer wire 413 opposing the first direction X.
[0025] The seventh OLED 37 and the eighth OLED 38 are located
respectively at one side of the first OLED 31 remote from the third
OLED 33, and one side of the second OLED 32 remote from the fourth
OLED 34. The bottom layer wire set 41 further includes a seventh
bottom layer wire 418 and an eighth bottom layer wire 419 that
include respectively an extended length opposing the first
direction X greater than the first bottom layer wire 410 and the
second bottom layer wire 411 opposing the first direction X. The
seventh bottom layer wire 418 and the eighth bottom layer wire 419
include respectively one end to form electric connection with the
seventh OLED 37 and the eighth OLED 37. The insulation layer 42
further includes a third through hole 423 and a fourth through hole
424 corresponding respectively to another ends of the seventh
bottom layer wire 418 and the eighth bottom layer wire 419. The
middle layer wire set 43 further includes a third middle later wire
(not shown in the drawings, but similar to the first middle layer
wire 431 located in the first through hole 421 or the second middle
layer wire 432 located in the second through hole 422 as shown in
FIG. 1E) located in the third through hole 423 to form electric
connection with another end of the seventh bottom layer wire 418,
and a fourth middle layer wire (also not shown in the drawings, but
similar to the first middle layer wire 431 located in the first
through hole 421 or the second middle layer wire 432 located in the
second through hole 422 as shown in FIG. 1E) located in the fourth
through hole 424 to form electric connection with another end of
the eighth bottom layer wire 419.
[0026] In addition, the invention further includes a top layer wire
set 44 which has the top layer internal connection wire 441 and a
top layer external connection wire 442. The top layer external
connection wire 442 is connected between the third middle layer
wire and the fourth middle layer wire.
[0027] As shown in the drawings, the OLED clusters 30 include eight
OLEDs in a unit, and a plurality of units can be arranged on a
straight line to form a linear light source. But this is merely an
example without limiting the number of the OLEDs in each unit.
Moreover, the barrier layer 60 is formed between the units. The
bottom layer wires in the bottom layer wire set 41 and the top
layer wires in the top layer wire set 44 also are interposed by the
barrier layer 60. For instance, the barrier layer 60 can include
the first barrier portion 61 located between the top layer external
connection wire 442 and the top layer internal connection wire 441,
and also a second barrier portion 62 located between the bottom
layer internal connection wire 417 and the bottom layer external
connection wire 414. In addition, drive method of the OLED clusters
30 is a technique known in the art, details are omitted herein.
[0028] As a conclusion, the bottom layer wires of part of the
bottom layer wire set can be extended vertically and axially via
the through holes and the middle layer wire set to connect to the
top layer wire set so that part of the wire area parallel with the
substrate can be replaced by the vertical connection structure,
thereby shrink the area of the OLED module.
* * * * *